... manufacturer factory in china which produce seamless pipe, we have two factory seprately produce cold ... rolled seamless pipe (Shandong Liaocheng ZGL Metal Manufacturing Co.,ltd) Material : seamless pipr API 5L Grade A B Size: ... 57, 60, 63.5, 68, 70, 73, 76, 80, 83, 89, 95, 102, 108, 114, 121, 127 ... outside diamention) 180-377mm WT(wall thickness): 14-80 mm hot-rolled seamless pipespeciation: 180, 188, 191 ...